Annie Russell

The lawmaker told reporters after the confrontation that she wouldn't be intimidated.

She had been calling for the ouster of Department of Homeland Security Secretary Kristi Noem at the time.

The man was tackled by security and led away.

Omar has come under increasing criticism by Republicans, including President Donald Trump.

At a rally hours earlier in Iowa, Trump mocked Omar's love for America amid boos from those in attendance.

Omar is a U.S.

citizen who was born in Somalia.

Omar is in her fourth term in the House and is seeking re-election.

For NPR News, I'm Annie Russell in St.

Paul.